Note that if there were a continue block on the above, it would get
executed even on discarded lines. If LABEL is omitted, the command
refers to the innermost enclosing loop. The nextEXPR
form, available
as of Perl 5.18.0, allows a label name to be computed at run time, being
otherwise identical to nextLABEL
.

next cannot be used to exit a block which returns a value such as
eval{}
, sub{}
, or do{}
, and should not be used to exit
a grep() or map() operation.

Note that a block by itself is semantically identical to a loop
that executes once. Thus next will exit such a block early.

Unlike most named operators, this has the same precedence as assignment.
It is also exempt from the looks-like-a-function rule, so
next("foo")."bar"
will cause "bar" to be part of the argument to
next.